Bacterium
Vibrio cholerae
Comma-shaped oxidase-positive rod
VIB-ree-oh KOL-er-eye
High-yield clue
Comma-shaped rod + oxidase positivity + toxin-mediated watery diarrhea vocabulary.
Overview
A curved Gram-negative rod used to teach cholera toxin vocabulary, aquatic exposure framing, and oxidase-positive curved-rod contrast.
Classification
- Gram-negative
- Curved rod
- Oxidase positive
Lab & identification clues
- Curved rod morphology
- Oxidase positive
- Toxin mechanism vocabulary
Associations
- Waterborne outbreak vocabulary
- Cholera toxin concept
- Public-health response framing
Commonly confused with
- Campylobacter jejuni
- Helicobacter pylori
Frequently asked questions
What is Vibrio cholerae?
A curved Gram-negative rod used to teach cholera toxin vocabulary, aquatic exposure framing, and oxidase-positive curved-rod contrast.
What is the Gram stain of Vibrio cholerae?
Vibrio cholerae is Gram negative.
What are the lab clues for Vibrio cholerae?
Lab clues for Vibrio cholerae include Curved rod morphology, Oxidase positive, and Toxin mechanism vocabulary.
What is Vibrio cholerae commonly confused with?
Vibrio cholerae is commonly confused with Campylobacter jejuni and Helicobacter pylori.
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.